There is debate as to PH you final cleanse water. There are enough folks out there that are for and against, with their own set of beliefs and theories. I, myself do not ph my water for the last weeks to cleanse. I surmise, that the plant uses up its stores of nutes and minerals in its leaves all on its own with cleanse waterings, and all you are doing is cleaning out the medium so the plant does not have anymore nutes and minerals to uptake. Upon time for me to cleanse, I use Fox Farms Sledge Hammer with my non PH'd water 1 time on all my plants until there is a bit of runoff. I then proceed to cleanse the plants for about 10 days with enough water to keep my pots medium heavy(by weight of pot) until chop day. It's what works for me.